Pernex AC 2.5% Gel 20g contains benzoyl peroxide, a common acne treatment. It works by reducing the acne-causing bacteria, unclogging pores, and decreasing inflammation. The 2.5% concentration is effective for treating mild to moderate acne. The gel is applied topically to affected areas, helping to prevent new breakouts and promote clearer skin with regular use. The 20g tube provides enough product for continued use in managing acne.